Date

sub-irrigation Articles

Irrigated area in the Mid-South USA continues to increase and now totals four million ha. Because of low available water holding capacities and shallow root-limiting layers in many soils, irrigation management is difficult. Water quality and water use efficiency impacts under irrigation are poorly understood, but comprehension is necessary if conversion from groundwater to surface water supplies ...

We examined the effects of pre-oxidation using ozone (O3) and a combination of O3 and hydrogen peroxide (O3/H2O2) on algae suspensions and their harvesting. Inactivation of algae cells, release of intracellular organic matter (IOM), mineralization of extracellular organic matter (EOM), and changes in molecular weight distribution of EOM were found after ...

TiO2@(AC/Fe3O4) (AC is activated carbon) was prepared by using AC and Fe3O4 as joint support. The morphological features, crystal structure, and magnetism of the final product were characterized. The results indicate that TiO2 particles formed on the surface of AC and Fe3O4; the sizes of TiO2 and ...

The removal of Orange II in aqueous solution by Fe3O4 enhanced anode oxidation (EC/Fe3O4 process) was performed in an electrochemical reactor. The process involved the use of a dimensionally stable anode and a stainless steel cathode. Fe3O4 was performed as particle electrodes to increase mass transfer coefficient and reduce energy ...

This paper explores the size and socio-demographic characteristics of a Jewish sub-economy found in Montreal in the late 1970s and 1980s, along with other features of Jewish economic activity in Canadian cities. It is found that there is a much higher than expected degree of intra-group economic activity found linking Jewish entrepreneurs, employers, workers, suppliers, and customers. This ...

In the late 1900s, as per-acre grain yields moved to 3 metric tons per hectare in South and Southeast Asia and Latin America, 5 metric tons per hectare in China, and 10 metric tons per hectare in North America, Europe and Japan, there’s one place where production stagnated big time: sub-Saharan Africa, where loss of soil fertility on small farms trapped grain production at an unsustainable ...

Nanowire/nanorod TiO2 structures of approximately 8 nm in diameter and around 1,000 nm long were synthesized by alkaline hydrothermal treatment of two different TiO2 nanopowders. The first precursor was TiO2 obtained by the sol-gel process (SG-TiO2); the second was the well-known commercial TiO2 P-25 (P25-TiO2). Anatase-like 1D TiO2 ...

Natural arsenic pollution of drinking water has been reported from over 70 countries world-wide, affecting an estimated 150 million people (Ravenscroft et. al., 2008). About 50 million of these people live in Bangladesh, 30 million in India and 33 million in six other countries of south and south-east Asia. It has recently been recognised that arsenic-contaminated groundwater used for irrigation ...

This book looks at Sustainable Irrigation in a holistic way, considering the multidisciplinary objectives of sustainable agriculture, sustainable water management, sustainable water infrastructure, sustainable irrigation communities and a sustainable environment, the need to reallocate water between competing users, and the need for water and food security in an environment of scarcity. It does ...

2,000 GPM Turbine pump supplies four 500 GPM pivot sprinklers After three VFD’s failed in less than five years, this farmer decided to try a Cycle Stop Valve. Three years later there have been no problems with the CSV. The system is able to supply one pivot just as easily as all four pivots when ...

Yemen is the least advanced country among Middle East Countries in the sewage reuse and safety control. The current sewage effluent quality in Yemen is generally poor as none of the existing sewage treatment plants produces effluents comply with the effluent quality regulations. The oxidation and stabilization ponds are considered the most appropriate for the warm climate conditions in the ...

Getting to Know Cannabis Farming Israel’s agricultural industry is ripening for the beginning of medical cannabis export, with the expected passage of medical export legislation by the end of the year. The timing is particularly fruitful for growers who are interested in succeeding in a new venture that is still in its infancy. The rewards are also high: Israel’s Health and ...

This case study aims to highlight, within the context of a Gender Pilot of the Peru Sierra Irrigation Project, how women's different needs were identified to facilitate their access to training and to increase their participation in the management of water users' organizations. It follows the diagnostic participatory discussions around the importance for communities to include women in water ...

This article deals with the domestic and private foreign direct investment in sub–Saharan African countries. The region share of global foreign direct investment inflows is 0.4% in 1990–2000, and 24% in 2004–2005. The most important reasons are linked with the socio–political and structural conditions. The African saving ratio is 18.1%, inflation 7.4% in 2009. This article shows that the ...

We demonstrate the growth of potential barriers, wells and periodic nanostructures on the basis of Hg1-xCdxTe by molecular beam epitaxy. In situ single wavelength ellipsometry is used for control of thickness and variation of Hg1-xCdxTe composition. The behavior of ellipsometric parameters measured during the ...

Over the recent years, convincing evidence has emerged of both a decrease in stratospheric ozone (O3) and an increase in tropospheric O3 concentration. There is an intimate relationship between O3 and photosynthesis (A), which is ultimately linked to plant growth and yield. Photosynthetic response, chlorophyll fluorescence, Rubisco ...

Innovative method for spray drying proteins with high yields. Spray-drying was shown to be a rapid, continuous, cost-effective, reproducible and scalable process for the production of dry powders from a liquid. Moreover, in the recent years, spray drying was identified by the pharmaceutical industry as a suitable method to produce protein particles used in pulmonary, nasal and oral ...

The purpose of the studies is to explore the relationship generally between agricultural sectors and practices and the environment. The sectoral studies describe the environmental relationship, the practical possibilities to improve that relationship and the various options (with agri-environmental measures) to establish environmental gains. They should contribute to an informal debate and ...

Owing to the soil nutrients erosivity by water flow the amount of minerals of water resources differ from place to place. When the irrigation take place the water taken from reservoirs the amount of minerals found in water is measured and the crops can be cultivated accordingly. TDS meter was used in my research in the cultivating lands in Vavuniya and Mannar Districts in Northern Part of ...

Given the current pressures to reduce irrigation water use, it is important to optimize the use of water in irrigated agriculture. This work was aimed at determining the optimum level of applied irrigation water (AIW) for cotton (Gossypium hirsutum L.) production in southern Spain under several climatic and agricultural policy scenarios. To generate the yield response to variations in AIW, we ...